Audi A3

since 1997 of release

Repair and car operation

Audi A3
+ Maintenance instruction
+ Current leaving and service
+ Engine
+ Systems of cooling, heating
- Power supply system and production of the fulfilled gases
   + Power supply system
   + System of injection of fuel
   + System of injection of the diesel engine
   - System of production of the fulfilled gases
      Operation of the catalytic converter
      Security measures for an exception of damages of the catalytic converter
      Removal and installation of system of release
      Checking of system of release
      Replacement of the central/additional exhaust silencer
      Check of system of release on tightness
      Replacement of the sensor of oxygen
+ engine Electric equipment
+ Manual box of gear shifting
+ Automatic transmission and models with a full drive
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Elektroskhema


Replacement of the sensor of oxygen


The oxygen sensor (l-probe) serves for regulation of composition of the fulfilled gases at petrol engines. It is screwed in a reception pipe near to the catalytic converter.



When lifting and car installation on supports there is a danger! Therefore previously familiarize with car Poddomkrachivaniye's subsection.

1. Lift and establish the car on supports.
2. Unscrew near the catalytic converter a cover of shtekerny connection of the sensor of oxygen. Disconnect an electric wire with clips at the heat-shielding screen. Take out from a cover the socket and расстыкуйте it.
3. Turn out the oxygen sensor a wrench, for example, HAZET 4680–3, from a pipe.


1. Grease a carving of the sensor of oxygen with special AUDI "G5" greasing. New sensors are already covered with the specified greasing.

Do not allow G5 hit in a shlitsa of the case of the sensor. The case of the new sensor whenever possible do not touch and do not pollute.

2. Screw the sensor in a reception pipe the moment of 50 N of m.
3. Lay a sensor cable in clips and connect. Screw a cover of shtekerny connection at the bottom.
4. Lower the car on wheels.